package org.linlinjava.litemall.admin.service;

import com.github.binarywang.wxpay.bean.request.WxPayRefundRequest;
import com.github.binarywang.wxpay.bean.result.WxPayRefundResult;
import com.github.binarywang.wxpay.exception.WxPayException;
import com.github.binarywang.wxpay.service.WxPayService;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.linlinjava.litemall.core.notify.NotifyService;
import org.linlinjava.litemall.core.notify.NotifyType;
import org.linlinjava.litemall.core.util.JacksonUtil;
import org.linlinjava.litemall.core.util.ResponseUtil;
import org.linlinjava.litemall.db.domain.*;
import org.linlinjava.litemall.db.service.*;
import org.linlinjava.litemall.db.util.CouponUserConstant;
import org.linlinjava.litemall.db.util.OrderUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import static org.linlinjava.litemall.admin.util.AdminResponseCode.*;

@Service

public class AdminOrderService {
    private final Log logger = LogFactory.getLog(AdminOrderService.class);

    @Autowired
    private LitemallOrderGoodsService orderGoodsService;
    @Autowired
    private LitemallOrderService orderService;
    @Autowired
    private LitemallGoodsProductService productService;
    @Autowired
    private LitemallUserService userService;
    @Autowired
    private LitemallCommentService commentService;
    @Autowired
    private WxPayService wxPayService;
    @Autowired
    private NotifyService notifyService;
    @Autowired
    private LitemallBrandService brandService;

    @Autowired
    private LitemallGoodsService goodsService;

    @Autowired
    private VolunteerService volunteerService;
    @Autowired
    private LogHelper logHelper;
    @Autowired
    private LitemallCouponUserService couponUserService;

    @Autowired
    private LitemallPriceHistoryService priceHistoryService;

    public Object list(Integer userId, String orderSn, LocalDateTime start, LocalDateTime end, List<Short> orderStatusArray,
                       Integer page, Integer limit, String sort, String order) {
        List<LitemallOrder> orderList = orderService.querySelective(userId, orderSn, start, end, orderStatusArray, page, limit,
                sort, order);
        return ResponseUtil.okList(orderList);
    }

    public Object detail(Integer id) {
        LitemallOrder order = orderService.findById(id);
        List<LitemallOrderGoods> orderGoods = orderGoodsService.queryByOid(id);
        UserVo user = userService.findUserVoById(order.getUserId());
        Map<String, Object> data = new HashMap<>();
        data.put("order", order);
        List<LitemallBrand> brands = brandService.all();
        //ordergoods商品添加供应商名字
        for (LitemallOrderGoods og: orderGoods
             ) {
            LitemallGoods goods = goodsService.findById(og.getGoodsId());
            if(goods != null) {
                for (LitemallBrand brand : brands
                ) {
                    if (brand.getId().equals(goods.getBrandId())) {
                        og.setBrandName(brand.getName());
                    }
                }
            }
        }
        data.put("orderGoods", orderGoods);
        data.put("user", user);
        return ResponseUtil.ok(data);
    }

    /**
     * 订单退款
     * <p>
     * 1. 检测当前订单是否能够退款;
     * 2. 微信退款操作;
     * 3. 设置订单退款确认状态；
     * 4. 订单商品库存回库。
     * <p>
     * TODO
     * 虽然接入了微信退款API，但是从安全角度考虑，建议开发者删除这里微信退款代码，采用以下两步走步骤：
     * 1. 管理员登录微信官方支付平台点击退款操作进行退款
     * 2. 管理员登录litemall管理后台点击退款操作进行订单状态修改和商品库存回库
     *
     * @param body 订单信息，{ orderId：xxx }
     * @return 订单退款操作结果
     */
    @Transactional
    public Object refund(String body) {
        Integer orderId = JacksonUtil.parseInteger(body, "orderId");
        String refundMoney = JacksonUtil.parseString(body, "refundMoney");
        if (orderId == null) {
            return ResponseUtil.badArgument();
        }
        if (StringUtils.isEmpty(refundMoney)) {
            return ResponseUtil.badArgument();
        }

        LitemallOrder order = orderService.findById(orderId);
        if (order == null) {
            return ResponseUtil.badArgument();
        }

        LitemallUser user = userService.findById(order.getUserId());
        BigDecimal actualprice = OrderUtil.INTEGRAL_PAY.equals(order.getPayCategory()) ? order.getIntegralPrice() : order.getActualPrice();
        if (actualprice.compareTo(new BigDecimal(refundMoney)) != 0) {
            return ResponseUtil.badArgumentValue();
        }

        // 如果订单不是退款状态，则不能退款
        if (!order.getOrderStatus().equals(OrderUtil.STATUS_REFUND)) {
            return ResponseUtil.fail(ORDER_CONFIRM_NOT_ALLOWED, "订单不能退款");
        }
        if(order.getPayCategory() == OrderUtil.INTEGRAL_PAY){
            if(!StringUtils.isEmpty(user)) {
                //通知志愿E+取消抵扣的积分
                volunteerService.cancelOrder(user.getMobile(), order.getPayId(), "取消商城订单(单号:" + order.getOrderSn() + ")");
                // 记录订单退款相关信息
                order.setRefundAmount(order.getIntegralPrice());
                order.setRefundType("积分返还接口");
                order.setRefundContent("");
            }
        }else {

            BigDecimal actualPrice = order.getActualPrice();
            BigDecimal total = new BigDecimal(0.00);
            BigDecimal alreayRefundMoney = BigDecimal.ZERO;
            //退款金额    找到所有关联订单,当订单为余额抵扣订单时，优先退还现金
            if(order.getPayId() != null && order.getBalanceMoney() != null){
                List<Short> orderStatus = OrderUtil.orderStatus(5);
                List<LitemallOrder> refundOrders = orderService.queryBalanceId(order.getPayId(), orderStatus);//已退款的订单
                for (LitemallOrder refundOrder: refundOrders
                     ) {
                    alreayRefundMoney = alreayRefundMoney.add(refundOrder.getActualPrice());
                }
            }

            // 微信退款
            WxPayRefundRequest wxPayRefundRequest = new WxPayRefundRequest();
            wxPayRefundRequest.setOutTradeNo(order.getOrderOnly()); //支付时的单号
            wxPayRefundRequest.setOutRefundNo("refund_" + order.getOrderSn()); // 退款单号 需要唯一

            Integer totalFee = null;

            List<LitemallOrder> orders = orderService.findByOnly(order.getOrderOnly());
            for (LitemallOrder order1 : orders){
                total = total.add(order1.getActualPrice());
            }
            //减去抵扣的钱,得到真正微信支付的钱
            if(order.getBalanceMoney() != null){
                total = total.subtract(order.getBalanceMoney());
            }
            //剩余微信支付的钱
            BigDecimal lastRefundMoney = total.subtract(alreayRefundMoney);
            //如果剩余微信支付的钱小于0，则不发起微信退款，直接退还余额
            if(lastRefundMoney.compareTo(BigDecimal.ZERO) <= 0){
                //
                priceHistoryService.addBalanceToUser(user, order.getId().toString(), order.getActualPrice(), LitemallPriceHistoryService.REFUND_TYPE);
                // 记录订单退款相关信息
                order.setRefundAmount(order.getActualPrice());
                order.setRefundType("余额返还");
                order.setRefundContent("");
            }else {
                //该订单应退微信金额,如果当前退款金额比剩余应退微信金额多，则把所有微信金额全部退还，并退还余额。否则
                if (actualPrice.compareTo(lastRefundMoney) > 0) {
                    //剩余的钱退还到用户的余额
                    priceHistoryService.addBalanceToUser(user, order.getId().toString(), actualPrice.subtract(lastRefundMoney), LitemallPriceHistoryService.REFUND_TYPE);
                    actualPrice = lastRefundMoney;
                }
                // 元转成分
                Integer currentFee = actualPrice.multiply(new BigDecimal(100)).intValue();
                totalFee = total.multiply(new BigDecimal(100)).intValue();
                wxPayRefundRequest.setTotalFee(totalFee); //这里必须是下单时的总金额
                wxPayRefundRequest.setRefundFee(currentFee); // 退款这单的金额

                WxPayRefundResult wxPayRefundResult;
                try {
                    wxPayRefundResult = wxPayService.refund(wxPayRefundRequest);
                } catch (WxPayException e) {
                    logger.error(e.getMessage(), e);
                    return ResponseUtil.fail(ORDER_REFUND_FAILED, "订单退款失败");
                }
                if (!wxPayRefundResult.getReturnCode().equals("SUCCESS")) {
                    logger.warn("refund fail: " + wxPayRefundResult.getReturnMsg());
                    return ResponseUtil.fail(ORDER_REFUND_FAILED, "订单退款失败");
                }
                if (!wxPayRefundResult.getResultCode().equals("SUCCESS")) {
                    logger.warn("refund fail: " + wxPayRefundResult.getReturnMsg());
                    return ResponseUtil.fail(ORDER_REFUND_FAILED, "订单退款失败");
                }
                // 记录订单退款相关信息
                order.setRefundAmount(order.getActualPrice());
                order.setRefundType("微信退款接口");
                order.setRefundContent(wxPayRefundResult.getRefundId());
            }
            if(user != null && !StringUtils.isEmpty(user.getMobile()) && order.getFeedbackIntegral().compareTo(new BigDecimal(0)) > 0) {
                //通知志愿E+取消获得的回馈积分
                volunteerService.delFeedbackIntegral(user.getMobile(), order.getOrderSn(), order.getFeedbackIntegral(),"取消商城订单(" + order.getOrderSn() + ")");
            }

        }

        LocalDateTime now = LocalDateTime.now();
        // 设置订单取消状态
        order.setOrderStatus(OrderUtil.STATUS_REFUND_CONFIRM);
        order.setEndTime(now);
        order.setRefundTime(now);
        if (orderService.updateWithOptimisticLocker(order) == 0) {
            throw new RuntimeException("更新数据已失效");
        }

        // 商品货品数量增加
        List<LitemallOrderGoods> orderGoodsList = orderGoodsService.queryByOid(orderId);
        for (LitemallOrderGoods orderGoods : orderGoodsList) {
            Integer productId = orderGoods.getProductId();
            Short number = orderGoods.getNumber();
            if (productService.addStock(productId, number) == 0) {
                throw new RuntimeException("商品货品库存增加失败");
            }
        }

        // 返还优惠券
        List<LitemallCouponUser> couponUsers = couponUserService.findByOid(orderId);
        for (LitemallCouponUser couponUser: couponUsers) {
            // 优惠券状态设置为可使用
            couponUser.setStatus(CouponUserConstant.STATUS_USABLE);
            couponUser.setUpdateTime(LocalDateTime.now());
            couponUserService.update(couponUser);
        }



        //TODO 发送邮件和短信通知，这里采用异步发送
        // 退款成功通知用户, 例如“您申请的订单退款 [ 单号:{1} ] 已成功，请耐心等待到账。”
        // 注意订单号只发后6位
        notifyService.notifySmsTemplateSync(order.getMobile(), NotifyType.REFUND,
                new String[]{order.getOrderOnly().substring(8, 14)});

        logHelper.logOrderSucceed("退款", "订单编号 " + order.getOrderSn());
        return ResponseUtil.ok();
    }

    /**
     * 发货
     * 1. 检测当前订单是否能够发货
     * 2. 设置订单发货状态
     *
     * @param body 订单信息，{ orderId：xxx, shipSn: xxx, shipChannel: xxx }
     * @return 订单操作结果
     * 成功则 { errno: 0, errmsg: '成功' }
     * 失败则 { errno: XXX, errmsg: XXX }
     */
    public Object ship(String body) {
        Integer orderId = JacksonUtil.parseInteger(body, "orderId");
        String shipSn = JacksonUtil.parseString(body, "shipSn");
        String shipChannel = JacksonUtil.parseString(body, "shipChannel");
        if (orderId == null || shipSn == null || shipChannel == null) {
            return ResponseUtil.badArgument();
        }

        LitemallOrder order = orderService.findById(orderId);
        if (order == null) {
            return ResponseUtil.badArgument();
        }

        // 如果订单不是已付款状态，则不能发货
        if (!order.getOrderStatus().equals(OrderUtil.STATUS_PAY)) {
            return ResponseUtil.fail(ORDER_CONFIRM_NOT_ALLOWED, "订单不能确认收货");
        }

        order.setOrderStatus(OrderUtil.STATUS_SHIP);
        order.setShipSn(shipSn);
        order.setShipChannel(shipChannel);
        order.setShipTime(LocalDateTime.now());
        if (orderService.updateWithOptimisticLocker(order) == 0) {
            return ResponseUtil.updatedDateExpired();
        }
        //TODO 发送邮件和短信通知，这里采用异步发送
        // 发货会发送通知短信给用户:          *
        // "您的订单已经发货，快递公司 {1}，快递单 {2} ，请注意查收"
        notifyService.notifySmsTemplate(order.getMobile(), NotifyType.SHIP, new String[]{shipChannel, shipSn});

        logHelper.logOrderSucceed("发货", "订单编号 " + order.getOrderSn());
        return ResponseUtil.ok();
    }

    /**
     * 删除订单
     * 1. 检测当前订单是否能够删除
     * 2. 删除订单
     *
     * @param body 订单信息，{ orderId：xxx }
     * @return 订单操作结果
     * 成功则 { errno: 0, errmsg: '成功' }
     * 失败则 { errno: XXX, errmsg: XXX }
     */
    public Object delete(String body) {
        Integer orderId = JacksonUtil.parseInteger(body, "orderId");
        LitemallOrder order = orderService.findById(orderId);
        if (order == null) {
            return ResponseUtil.badArgument();
        }

        // 如果订单不是关闭状态(已取消、系统取消、已退款、用户已确认、系统已确认)，则不能删除
        Short status = order.getOrderStatus();
        if (!status.equals(OrderUtil.STATUS_CANCEL) && !status.equals(OrderUtil.STATUS_AUTO_CANCEL) &&
                !status.equals(OrderUtil.STATUS_CONFIRM) &&!status.equals(OrderUtil.STATUS_AUTO_CONFIRM) &&
                !status.equals(OrderUtil.STATUS_REFUND_CONFIRM)) {
            return ResponseUtil.fail(ORDER_DELETE_FAILED, "订单不能删除");
        }
        // 删除订单
        orderService.deleteById(orderId);
        // 删除订单商品
        orderGoodsService.deleteByOrderId(orderId);
        logHelper.logOrderSucceed("删除", "订单编号 " + order.getOrderSn());
        return ResponseUtil.ok();
    }

    /**
     * 回复订单商品
     *
     * @param body 订单信息，{ orderId：xxx }
     * @return 订单操作结果
     * 成功则 { errno: 0, errmsg: '成功' }
     * 失败则 { errno: XXX, errmsg: XXX }
     */
    public Object reply(String body) {
        Integer commentId = JacksonUtil.parseInteger(body, "commentId");
        if (commentId == null || commentId == 0) {
            return ResponseUtil.badArgument();
        }
        // 目前只支持回复一次
        LitemallComment comment = commentService.findById(commentId);
        if(comment == null){
            return ResponseUtil.badArgument();
        }
        if (!StringUtils.isEmpty(comment.getAdminContent())) {
            return ResponseUtil.fail(ORDER_REPLY_EXIST, "订单商品已回复！");
        }
        String content = JacksonUtil.parseString(body, "content");
        if (StringUtils.isEmpty(content)) {
            return ResponseUtil.badArgument();
        }
        // 更新评价回复
        comment.setAdminContent(content);
        commentService.updateById(comment);

        return ResponseUtil.ok();
    }


}
